41. A system is critically damped. If the gain of the system is increased, the system will behave as :
(a) undamped
(b) underdamped
(c) overdamped
(d) no effect of gain
42. The effect of increase in the forward path gain of a control system on the damping ratio is that the damping ratio is :
(a) increased
(b) reduced
(c) not effected
(d) made zero
43. For a second – order systems as ξ is increased from zero, the response becomes :
(a) Progressively more oscillatory
(b) Progressively less oscillatory
(c) zero
(d) infinity
44. The roots of the characteristic equation are the same as the poles of the :
(a) closed-loop transfer function
(b) open –loop transfer function
(c) forward path transfer function
(d) none of these
45. The rise time of a second – order underdamped system is the time taken by the output to rise :
(a) from 10% to 90% of its final steady – state value
(b) from 0%to 100% to 100% of its final steady – state value
(c) from 5% ato 95% of its final steady – state value
(d) from 0% to 50% its final steady – state value
Related Posts
Time Domain Analysis » Exercise - 140. For critically – damped system, the damping ratio is : (a) ξ=0 (b) ξ=∞ (c) ξ (d) ξ=1- Frequency Domain Analysis » Exercise - 1 20. For a second – order system, ωn = 8 and ξ= 0.5. The value of ωr in rad/s is : (a) 4.657 (b) 5.657 (c) 6.657 (d) none of these
- Stability Theory » Exercise - 253. The phase margin of a system is 40˚. The damping ratio of the system ξ is approximately : (a) 0.04 (b) 0.4 (c) 4 (d) cannot be estimated
- Frequency Domain Analysis » Exercise - 115. The damping ratio ξ of a system is 0.5. The value of Mr is : (a) 2.308 (b) 1.54 (c) 1.01 (d) none of these
- 5555555555140. The two digits in the binary number system are ___ and ___. (a) 1, 2 (b) H, L (c) T, F (d) 0, 1